TM-9-2320-279-10-1
M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)
OPERATOR’S MANUAL VOLUME 1 OF 2
DECEMBER 1998
CHANGE 5
TM-9-2320-279-10-1 - Page 122 of 773
TM 9-2320-279-10-1
Table 2-1. Preventive Maintenance Checks and Services for Models M977 thru M985E1
Location
Item Interval
Item to
Crewmember
Not Fully Mission
No.
Check/
Procedure
Capable If:
Service
49 Weekly Tires
DRIVER
Continued
M985
Standard Tire
Sand Tire
Spare Tire
(all models)
Standard Tire
Sand Tire
Maximum Speed
(all models)
Standard Tire
Sand Tire
M984E1 (when towing
another vehicle)
Standard Tire
Sand Tire
TIRE PRESSURES (Cont)
Cross
Cross
Sandy
Highway
Country-Dry
Country-Wet
Terrain
SO psi
50 psi
40 psi
40 psi
(621 kPa)
(345 kPa)
(276 kPa)
(276 kPa)
100 psi
40 psi
(690 kPa)
NA
NA
(276 kPa)
100 psi
100 psi
100 psi
100 psi
(690 kPa)
(690 kPa)
(690 kPa)
(690 kPa)
100 psi
100 psi
(690 kPa)
NA
NA
(690 kPa)
OPERATING SPEEDS
Cross
Cross
Sandy
Highway
Country-Dry
Country-Wet
Terrain
55 mph
40mph
20mph
20mph
(88 kmh)
(64 kmh)
(32 kmh)
(32 kmh)
55 mph
20mph
(88 kmh)
NA
NA
(32kmh)
15mph
15mph
15mph
15mph
(24 kmh)*
(24 kmh)
(24 kmh)
(24 kmh)
15mph
15mph
(24 kmh)*
NA
NA
(24 kmh)
*
Operation at speeds over 15 mph (24 kmh) on paved road can
be achieved when the operator determines that the vehicle
being towed and the terrain allow for safe operation. Under no
condition can speeds exceed 35 mph (55 kmh) on paved road
and 15mph (24 kmh) off paved roads.
Change 5
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